diff --git a/backend/internal/api/updates.go b/backend/internal/api/updates.go
index ba2a28d..054b889 100644
--- a/backend/internal/api/updates.go
+++ b/backend/internal/api/updates.go
@@ -77,7 +77,7 @@ func (h *UpdatesHandler) GetTargets(w http.ResponseWriter, r *http.Request) {
 		{ID: "host", Name: "Proxmox Host", Status: "running"},
 	}
 
-	output, err := h.sshPool.RunCommand(sshHost, sshUser, sshPass, "/usr/sbin/pct list 2>/dev/null")
+	output, err := h.sshPool.RunCommand(sshHost, sshUser, sshPass, "sudo -n /usr/sbin/pct list 2>/dev/null")
 	if err == nil {
 		for _, line := range strings.Split(output, "\n") {
 			line = strings.TrimSpace(line)
@@ -130,20 +130,21 @@ func (h *UpdatesHandler) GetPackages(w http.ResponseWriter, r *http.Request) {
 		command = "apt list --upgradable 2>/dev/null"
 	case len(target) > 4 && target[:4] == "lxc:":
 		lxcID := target[4:]
-		command = fmt.Sprintf("/usr/sbin/pct exec %s -- apt list --upgradable 2>/dev/null", lxcID)
+		command = fmt.Sprintf("sudo -n /usr/sbin/pct exec %s -- apt list --upgradable 2>/dev/null", lxcID)
 	default:
 		JSONError(w, "Cible invalide", http.StatusBadRequest)
 		return
 	}
 
 	output, err := h.sshPool.RunCommand(sshHost, sshUser, sshPass, command)
-	if err != nil {
+	packages := parseAptPackages(output)
+	if err != nil && len(packages) == 0 {
 		log.Printf("[updates/packages] Erreur SSH pour %s : %v", target, err)
 		JSONError(w, "Erreur SSH : "+err.Error(), http.StatusBadGateway)
 		return
 	}
 
-	JSONResponse(w, http.StatusOK, parseAptPackages(output))
+	JSONResponse(w, http.StatusOK, packages)
 }
 
 // parseAptPackages analyse la sortie de `apt list --upgradable`.
@@ -289,14 +290,14 @@ func (h *UpdatesHandler) executeUpdate(jobID, target, sshHost, sshUser, sshPass
 	case len(target) > 4 && target[:4] == "lxc:":
 		lxcID := target[4:]
 		command = fmt.Sprintf(
-			"/usr/sbin/pct exec %s -- bash -c 'DEBIAN_FRONTEND=noninteractive apt-get update && DEBIAN_FRONTEND=noninteractive apt-get full-upgrade -y'",
+			"sudo -n /usr/sbin/pct exec %s -- bash -c 'DEBIAN_FRONTEND=noninteractive apt-get update && DEBIAN_FRONTEND=noninteractive apt-get full-upgrade -y'",
 			lxcID,
 		)
 
 	case target == "all":
-		command = `for ct in $(/usr/sbin/pct list | awk 'NR>1 {print $1}'); do
+		command = `for ct in $(sudo -n /usr/sbin/pct list | awk 'NR>1 {print $1}'); do
 			echo "=== LXC $ct ==="
-			/usr/sbin/pct exec $ct -- bash -c 'DEBIAN_FRONTEND=noninteractive apt-get update -qq && DEBIAN_FRONTEND=noninteractive apt-get full-upgrade -y' 2>/dev/null || echo "SKIP LXC $ct"
+			sudo -n /usr/sbin/pct exec $ct -- bash -c 'DEBIAN_FRONTEND=noninteractive apt-get update -qq && DEBIAN_FRONTEND=noninteractive apt-get full-upgrade -y' 2>/dev/null || echo "SKIP LXC $ct"
 		done`
 
 	default: